3. TROUBLE SHOOTING
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Copyright © 2013 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
Measurement
SIM 1
VREG_USIM1_2.85V
SIM1_RST
SIM1_IO
SIM 2 & SMI 3 Controller
HSSC-6P-27_N
J8001
9
8
10
7
6
3
5
2
4
1
C1
C5
C2
C6
C3
C7
GND1 GND4
GND2 GND3
DNI
C8012
C8011
DNI
DNI
C8000 VA8000
VA8004
VREG_USIM1_2.85V
VA8003
VA8002
R8000
15K
0.1u
C8004
SIM1_CLK
SIM1_IO
SIM1_RST
TP2
TP1
TP3
U8001
TXS02324
21
4
18
3
12
20
19
1
2
7
8
6
5
17
16
15
11
10
9
14
13
SCK
SDA
SIMRST
SIMCLK
SIMI/O
IRQ
RSTX
DNU
VISM1
SIM1RST
SIM1CLK
SIM1I/O
VSIM2
SIM2RST
SIM2CLK
SIM2I/O
VDDI/O
VBAT
GND1
GND2
PGND
R8022
1
C8025
1u
C8024
1u
VREG_USIM2_2.85V_CONN
VREG_USIM3_2.85V
VBAT
C8023
1u
1u
C8026
R802
9
4.7K
R8028
4.7K
VREG_MSME_1.8V VREG_MSME_1.8V
SIM2_CLK
SIM2_RST
SIM2_IO
SIM3_RST
SIM3_CLK
SIM3_IO
SIM2_RST_CONN
SIM2_CLK_CONN
SIM2_IO_CONN
SIM_CONTROLLER_IRQ
SIM_CONTROLLER_RESET
SIM_CONTROLLER_I2C_SCL
SIM_CONTROLLER_I2C_SDA
TP10
TP11